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Opportunity at National Institute of Standards and Technology (NIST)

Quantum-Accurate Waveform Synthesis and Metrology

Location

Physical Measurement Laboratory, Quantum Measurement Division

RO# Location
50.68.41.B8137 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
Underwood, Jason M jason.underwood@nist.gov 301.975.4891

Description

We are working on precision waveform synthesis and metrological applications of the ac Josephson voltage standard (ACJVS). The ACJVS is one of several quantum-based systems that have or will soon supersede artifact electrical standards. The ACJVS works as a perfect quantizer: converting weakly-defined input current pulses into voltage pulses with precisely defined (V-t) areas equal to h/2e. Arbitrary waveform generation is accomplished by precisely controlling the timing and density of the input current pulses. Research projects range from signal processing topics (e.g., optimization of data converter algorithms to efficiently compute gigabit FFTs and minimize spurious tones) to precision electrothermal measurements in condensed matter physics (e.g., thermal Hall effect, heat transport in reduced dimensions or of novel materials).

 

Keywords:
Josephson junction; Superconductivity; Signal processing; Precision measurements; Nanoscale thermal transport; Condensed matter physics; Cryogenics; RF & microwave engineering; Metrology;

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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